Hallo,
ich verwende Java 1.4 und habe hier ein Beispiel für eine sortierbare Tabelle.
Diese funktioniert aber nicht richtig, sobald eine Spalte per Mausklick verschoben wird.
Könnt ihr mir weiterhelfen?
ich verwende Java 1.4 und habe hier ein Beispiel für eine sortierbare Tabelle.
Diese funktioniert aber nicht richtig, sobald eine Spalte per Mausklick verschoben wird.
Könnt ihr mir weiterhelfen?
Code:
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
//import com.sun.java.swing.plaf.motif.MotifGraphicsUtils;
public class JTableExample extends JFrame {
private JTable table;
private JPanel filterPanel;
private JTextField txtFilter;
private JButton btnFilter, btnShowAll;
private FooTableModel model, filteredModel;
private boolean filteredModelInUse;
//private final ImageIcon UP_ICON = new ImageIcon(MotifGraphicsUtils.class
// .getResource("icons/ScrollUpArrow.gif"));
//private ImageIcon DOWN_ICON = new ImageIcon(MotifGraphicsUtils.class
// .getResource("icons/ScrollDownArrow.gif"));
public JTableExample() {
super("JTableExample");
setDefaultCloseOperation(EXIT_ON_CLOSE);
Object[][] rowData = { { "1", "a", "c" }, { "2", "b", "b" },
{ "3", "f", "r" }, { "4", "q", "a" }, { "5", "w", "z" },
{ "6", "c", "a" }, { "7", "a", "q" } };
final Object[] columnHeaders = { "ID", "Header1", "Header2" };
model = new FooTableModel(rowData, columnHeaders);
table = new JTable(model);
table.getTableHeader().setDefaultRenderer(
new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
JTableHeader header = table.getTableHeader();
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
setText(value == null ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setHorizontalAlignment(SwingConstants.CENTER);
setHorizontalTextPosition(SwingConstants.LEFT);
/**
if (model.sortColumnDesc[column]) {
setIcon(UP_ICON);
} else {
setIcon(DOWN_ICON);
}
*/
return this;
}
});
table.getTableHeader().addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent evt) {
model.sortByColumn(table.columnAtPoint(evt.getPoint()));
}
});
filterPanel = new JPanel(new BorderLayout());
txtFilter = new JTextField();
btnFilter = new JButton("filter");
btnFilter.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String filterRegex = txtFilter.getText();
Pattern pattern = Pattern.compile(filterRegex);
int i = 0;
List filteredItems = new ArrayList();
for (Iterator iter = model.getDataVector().iterator(); iter
.hasNext(); i++) {
Vector v = (Vector) iter.next();
String str = (String) v.get(1); // Nur zweite Spalte Filtern
Matcher m = pattern.matcher(str);
if (m.find()) {
filteredItems.add(v);
}
}
int size = filteredItems.size();
if (size == model.getRowCount()) {
filteredModelInUse = false;
} else {
filteredModelInUse = true;
Object[][] rowData = new Object[size][columnHeaders.length];
int j = 0;
for (Iterator iter = filteredItems.iterator(); iter
.hasNext(); j++) {
Vector element = (Vector) iter.next();
rowData[j] = element.toArray();
}
filteredModel = new FooTableModel(rowData, columnHeaders);
table.setModel(filteredModel);
table.updateUI();
}
}
});
btnShowAll = new JButton("Zeige alles");
btnShowAll.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
table.setModel(model);
filteredModelInUse = false;
}
});
filterPanel.add(btnShowAll, BorderLayout.WEST);
filterPanel.add(txtFilter, BorderLayout.CENTER);
filterPanel.add(btnFilter, BorderLayout.EAST);
Container c = getContentPane();
c.add(new JScrollPane(table), BorderLayout.CENTER);
c.add(filterPanel, BorderLayout.SOUTH);
pack();
setVisible(true);
}
public static void main(String[] args) {
new JTableExample();
}
public boolean isFilteredModelVisible() {
return filteredModelInUse;
}
class FooTableModel extends DefaultTableModel {
private boolean[] sortColumnDesc;
private int currentSortColumn = 0;
private Comparator comparator = new Comparator() {
public int compare(Object o1, Object o2) {
Vector v1 = (Vector) o1;
Vector v2 = (Vector) o2;
int size1 = v1.size();
if (currentSortColumn >= size1)
throw new IllegalArgumentException("max column idx: "
+ size1);
Comparable c1 = (Comparable) v1.get(currentSortColumn);
Comparable c2 = (Comparable) v2.get(currentSortColumn);
int cmp = c1.compareTo(c2);
if (sortColumnDesc[currentSortColumn]) {
cmp *= -1;
}
return cmp;
}
};
public FooTableModel(Object[][] rowData, Object[] headers) {
super(rowData, headers);
sortColumnDesc = new boolean[headers.length];
}
public void sortByColumn(final int clm) {
if (clm == 0) // erste Spalte nicht Sortieren...
return;
currentSortColumn = clm;
Vector v = null;
if (JTableExample.this.isFilteredModelVisible()) {
v = JTableExample.this.filteredModel.dataVector;
} else {
v = JTableExample.this.model.dataVector;
}
Collections.sort(v, comparator);
model.sortColumnDesc[clm] ^= true;
}
}
}
